Master cylinder vents
05-30-2015, 09:52 AM
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Master cylinder vents
I posted earlier about my problem with brake fluid coming out of the 2 vent holes in the master cylinder cap of bro n laws 59.I have since let the level down to half of the reservoir level which is about 1-1/4" below top of MC.I can see that as soon as you touch the brake pedal fluid starts squirting from the small hole in the bottom middle of the reservoir and it squirts right into the top of cap and out of the vents.When I called White Post they told me to be sure that the cap gasket was in place and send it back to them.I don't want to do that unless I have to.If anyone has any other suggestions for why this is happening I sure would appreciate.I'm ready to take a little ride in this thing.Thanks, Eddie
05-30-2015, 10:29 AM
#2
Le Mans Master
Going back to your prior thread, do you have a good brake pedal and does the car stop OK?? If so, Your cap may be the problem.
Can you post a picture of both inside and outside. On an original cast iron metal cap, the inner portion is supposed to have a "hood" that deflects the brake fluid back down in to the reservoir. The vent holes are tiny and above it and should be HORIZONTAL on the flats of the cap nut. Almost impossible for any fluid to get out.
Pilot Dan
Can you post a picture of both inside and outside. On an original cast iron metal cap, the inner portion is supposed to have a "hood" that deflects the brake fluid back down in to the reservoir. The vent holes are tiny and above it and should be HORIZONTAL on the flats of the cap nut. Almost impossible for any fluid to get out.
Pilot Dan
05-30-2015, 11:04 AM
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Going back to your prior thread, do you have a good brake pedal and does the car stop OK?? If so, Your cap may be the problem.
Can you post a picture of both inside and outside. On an original cast iron metal cap, the inner portion is supposed to have a "hood" that deflects the brake fluid back down in to the reservoir. The vent holes are tiny and above it and should be HORIZONTAL on the flats of the cap nut. Almost impossible for any fluid to get out. Pilot Dan
Can you post a picture of both inside and outside. On an original cast iron metal cap, the inner portion is supposed to have a "hood" that deflects the brake fluid back down in to the reservoir. The vent holes are tiny and above it and should be HORIZONTAL on the flats of the cap nut. Almost impossible for any fluid to get out.
Pilot Dan
05-30-2015, 12:04 PM
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Going back to your prior thread, do you have a good brake pedal and does the car stop OK?? If so, Your cap may be the problem.
Can you post a picture of both inside and outside. On an original cast iron metal cap, the inner portion is supposed to have a "hood" that deflects the brake fluid back down in to the reservoir. The vent holes are tiny and above it and should be HORIZONTAL on the flats of the cap nut. Almost impossible for any fluid to get out. Pilot Dan
Can you post a picture of both inside and outside. On an original cast iron metal cap, the inner portion is supposed to have a "hood" that deflects the brake fluid back down in to the reservoir. The vent holes are tiny and above it and should be HORIZONTAL on the flats of the cap nut. Almost impossible for any fluid to get out.
Pilot Dan
05-30-2015, 07:23 PM
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